4-2 Triangle Congruence by SSS & SAS

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Presentation transcript:

4-2 Triangle Congruence by SSS & SAS 11/18 4-2 Triangle Congruence by SSS & SAS Objective: To Determine whether triangles are congruent using SSS and SAS postulate

What can you conclude from each diagram Warm up: What can you conclude from each diagram

Discovery Time! Quickly & Quietly Get into groups of 3 Person 1: Make a triangle with lengths 2, 3, 4 in. Person 2: Make a triangle with lengths 3, 4, 5 in. Group: Walk around and observe same triangles made by other groups Person 3: Record what observations your group have made

SSS postulate If 3 Corresponding Sides are congruent, then the triangles are congruent.

Ex 1:

SAS Postulate: If two corresponding sides and the included angle are congruent then the triangles are congruent.

Ex 2: From the info give, can you prove Explain.

Ex 3:

Ex 4:

Ex 5:

Homework Pg 189-190 2-30 evens Omit 6,